Friday 21 June 2013 07.10 EDT
First published on Friday 21 June 2013 07.10 EDT

Type: Medium mountainTime: 12:35 CET (11:35 BST)

William Fotheringham's preview

After the east coast and the centre, it's the turn of Corsica's west coast, but this could be the toughest of the three island stages. It's short again, there is barely a metre of flat road, and the brief, steep, Col de Marsolino comes 10km from the finish. This is a stage for Gilbert, or possibly Ireland's Daniel Martin, but the selection could be quite brutal by the end, with perhaps 30 or 40 left. One for the favourites to be very wary of, as a puncture or crash at the wrong time could be extremely costly.